it was my first betta, just came home from work and my fiancee told me he was gone. saddening, not sure what happened, all day yesterday he was sitting on the bottom of the tank, it also looked like he struggled to swim, sometimes doing so sideways, after a bit of swimming he would sink back down to the bottom. with my new heater the temp was good, i used that Kent Marine betta bowl essential in there had him in this bowl. http://www.walmart.com/ip/3-Gallon-A...m-Kit/13448744
Also had two of those little plant ball thingys that wallmart sells

I dunno what happen, maybe the lights that the bowl has could have put stress on him? maybe something wrong with his fin. i feed him the bloodworms, i wanted to know cause i was gonna pick up a new betta for the bowl... i dont wanna have a repeat.
perhapes the bubbles from the air filter in there was too strong, maybe the current?